Non-conventional low-cost adsorbents for dye removal: A review

Application of low-cost adsorbents for dye removal – A review

Adsorption of methylene blue on low-cost adsorbents: A review

Heavy metal adsorbents prepared from the modification of cellulose : A review

Utilization of agro-industrial and municipal waste materials as potential adsorbents for water treatment—A review

The role of sawdust in the removal of unwanted materials from water.

Inability to use full solar energy, especially near infrared radiation (NIR: 780–1400 nm), is one of the major limitations for solar energy harvesting due to the narrow bandgap (electronic as well as photonic). In this work, we designed the 1D photonic metasurfaces of TiO2 with reduced graphene oxide (rGO) in an attempt to obtain broader absorption bandwidth in NIR. Further, to realize this experimentally, graphene oxide reduced TiO2 nanocomposites are synthesized using the hydrothermal method to form a quantum well. The composites are observed in the anatase phase of TiO2 with graphitic reflection, and microstructural studies that indicate the conversion of TiO2 nanoparticles into nanotubes with reduced graphene oxide intercalation forming a kind of self-assembled metasurfaces. UV–vis absorption studies indicate a significant reduction in bandgap energy; typically, the indirect bandgap reduces near to zero. The experimental and numerical simulation results suggest phonon scattering dominated free carrier absorption in NIR in the TiO2/rGO metasurface leading to wide broadband absorption (700–10 000 nm). 

Bandgap engineering in TiO2/rGO 1D photonic metasurfaces as broadband solar absorber

Direct utilization of gaseous fuels in metal supported solid oxide fuel cells

BACKGROUND
Small non-coding micro RNAs (miRNAs) are indicated in various metabolic processes and play a critical role in disease pathology, including gestational diabetes mellitus (GDM).


OBJECTIVE
The purpose of this study was to examine the altered expression of miRNAs and their target genes in placental tissue (PL), cord blood (CB), and maternal blood (MB) of matched non-glucose tolerant (NGT) and GDM mother.


METHODS
In a case-control study, micro-RNA was quantified from forty-five serum (MB n = 15, CB n = 15, and PL n = 15) and matched placental tissue using stem-loop RT-qPCR followed by target prediction, network construction and functional and pathways enrichment analysis. Further, target genes were verified in-vitro through transfection and RT-qPCR.


RESULTS
Five miRNAs, namely hsa-let 7a-5P, hsa-miR7-5P, hsa-miR9-5P, hsa-miR18a-5P, and hsa-miR23a-3P were significantly over-expressed (p < 0.05) in all three samples namely PL, CB, and MB of GDM patients. However, the sample-wise comparison reveals higher expression of miRNA 7 in MB while lowest in CB than control. Furthermore, a comparison of fold change expression of target genes discloses a lower expression of IRS1, IRS2, and RAF1 in MB while comparatively higher expression of NRAS in MB and CB. In-vitro validation reveals lower expression of IRS1/2 and RAF1 in response to overexpression of miR-7 and vice-versa. Thus it is evident that increased miRNA7 expression causes down-regulation of its target genes IRS1, IRS2, and RAF1 in GDM mother compared to control. Further, target prediction, pathway enrichment, and hormone analysis (significantly higher FSH & LH in MB of GDM compared to NGT) revealed the insulin signaling, inflammatory and GnRH signaling as major pathways regulated by miRNA7.


CONCLUSIONS
Thus, an elevated level of miRNA7 may be associated with the progression of GDM by altering the multiple pathways like insulin, GnRH, and inflammatory signaling pathways via targeting IRS1, IRS2, and RAF1, implicating a new therapeutic target for GDM.

MicroRNA-7 regulates insulin signaling pathway by targeting IRS1, IRS2, and RAF1 genes in gestational diabetes mellitus.

In Vitro Cancer Cell Imaging, Free Radical Scavenging, and Fe3+ Sensing Activity of Green Synthesized Carbon Dots from Leaves of Piper longum

Pawan Kumar Dubey

Papers

The role of sawdust in the removal of unwanted materials from water.

Bandgap engineering in TiO2/rGO 1D photonic metasurfaces as broadband solar absorber

Direct utilization of gaseous fuels in metal supported solid oxide fuel cells

MicroRNA-7 regulates insulin signaling pathway by targeting IRS1, IRS2, and RAF1 genes in gestational diabetes mellitus.

In Vitro Cancer Cell Imaging, Free Radical Scavenging, and Fe3+ Sensing Activity of Green Synthesized Carbon Dots from Leaves of Piper longum